EVL90WADP-LLCSR STMicroelectronics, EVL90WADP-LLCSR Datasheet - Page 8

• Manufacturer Part Number: EVL90WADP-LLCSR
• Description: EVAL BOARD PORTABLE PWR SUPPLY
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL90WADP-LLCSR

• Main Purpose: AC/DC, Primary and Secondary Side with PFC
• Outputs And Type: 1, Isolated
• Power - Output: 90W
• Voltage - Output: 19V
• Current - Output: 4.75A
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Boost
• Frequency - Switching: 130kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6563H, L6599A, SRK2000
• Input Voltage: 90 V to 264 V
• Output Voltage: 19 V
• Dimensions: 65 mm x 155 mm
• Product: Power Management Modules
• Supply Current: 4.75 A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563H, L6599A, SRK2000
• Other names: 497-10377

Main characteristics and circuit description
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In order to achieve better load transient response, the PFC burst-mode operation is partially
forced by the resonant converter: as soon as the L6599A stops switching due to load drops,
its PFC_STOP pin pulls down the L6563H's PFC_OK pin, disabling PFC switching. Thanks
to this simple circuit, the PFC is forced into an idle state when the resonant stage is not
switching, and rapidly wakes up when the downstream converter restarts switching. This
solution prevents significant drop of the bulk voltage in case of abrupt load rising.
Figure 2.
Electrical diagram
Doc ID 16064 Rev 1
AN3014